diff --git a/.changeset/beige-horses-fetch.md b/.changeset/beige-horses-fetch.md
new file mode 100644
index 0000000000..4755858eae
--- /dev/null
+++ b/.changeset/beige-horses-fetch.md
@@ -0,0 +1,5 @@
+---
+"@primer/css": major
+---
+
+Comment box upload focus border-radius
diff --git a/src/forms/form-validation.scss b/src/forms/form-validation.scss
index 018a781e06..e0c27b94ba 100644
--- a/src/forms/form-validation.scss
+++ b/src/forms/form-validation.scss
@@ -235,7 +235,11 @@ dl.form-group > dd, // TODO: Deprecate
   }
 
   &.focused {
-    @include focusBoxShadowInset(2px, var(--color-accent-fg));
+    border-color: var(--color-accent-fg);
+    border-radius: $border-radius;
+    outline: none;
+    // stylelint-disable-next-line primer/box-shadow
+    box-shadow: 0 0 0 2px var(--color-accent-fg);
 
     .form-control {
       border-color: transparent;